Two Palm Beach County men have been arrested after federal investigators said they were involved in a plot to kidnap a wealthy Palm Beach Gardens man and hold him ransom for $20 million.

Michael Melillo, 50, of Palm Beach Gardens, and Pavlos Kaimacliotis, 38, of Jupiter, were arrested Wednesday on charges of conspiracy to kidnap, attempted kidnapping and extortion.

The FBI said Melillo plotted with Kaimacliotis to kidnap the intended victim as payback for a series of poker games that Melillo lost about $100,000 over a two-year period. According to the criminal affidavit, Melillo believed the poker games were rigged for him to lose and that the intended victim was getting a percentage of his losses.